European Union

The secretary of state said the U.S. would ratchet up the number of migrants Washington accepts over the next few years to help the European Union deal with the ongoing crisis.

The snap election was called by Prime Minister Alexis Tsipras as he stepped down following a referendum opposing an EU bailout plan his government had negotiated.

Zagreb has begun sending thousands of migrants back to hard-line Hungary, sparking a war of words between the two nations over border security.

More than 6,000 so far have entered the Balkan nation from neighboring Serbia after Hungary cracked down at its border, erecting a fence and turning back refugees with tear gas and water cannons.

Hours before a Tuesday deadline, Hungarian soldiers and police formed a human chain to prevent refugees from crossing, as they erected a fence along their southern border with Serbia.

Interior Minister Thomas de Maiziere said trains between Austria and Germany would be suspended for 12 hours "to return to orderly procedures" for entering the country.

The chancellor's remarks came even as her deputy warned that the country was reaching the limits of how many refugees it could absorb.

So far in 2015, more than 200,000 people have reached Greece and another 100,000 reached Italy, the U.N. says. Germany expects as many as 800,000 new arrivals this year.

Thousands of refugees, mainly escaping conflict in Syria and Iraq, began arriving in Munich after transiting through Austria.

Groups of the refugees earlier had left a rail station and stopped train and begun walking toward Austria. Also: The father of a 3-year-old Syrian boy who drowned in the Aegean Sea buries his family.